Define the term Telegram.

Telegram: A telegram is a form of communication that has been historically used for sending messages over long distances. It involves transmitting textual messages in a concise and efficient manner, typically through telegraphy. In the past, telegrams were sent via wires using Morse code and were later delivered in written form to the recipient. Although less common in the age of digital communication, the term "telegram" can still refer to any message sent over a telegraphic system or, more broadly, to any short, direct message.